Crane



March 23 153266 E. T. BENNINGTON CRANE Filed March 4,

1925 2 Sheets-Sheet Amt/e717??? (52% 59% 15w m t Man-c 51 23 W26 E 11BENNiNGTON CRANE Fi led March 14. 1923 2 Sheets-Sheet 2 SERIES BRAKE .5HOISIT MOTOR. 9f FIEL'DCOILS PUSH BUTTON 1 c Li M T ONTROL.

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CRANE.

Application filed March 14, 1923. Serial No. 624,939.

To all whom it may conccm:

Be it known that L Eimr, T. BENNINGTON, ll, citizen of the UnitedStates, residing at Willough oy, in the county of Liike'and State ofOhio, have invented a certain new mid useful Improven'icnc in Cranes, ofwhiclilhe following is a. full, clear, and exact description.

This invention relalcs to cranes of the hand propellecl electric hoisttype, and has for its chief object to improve the control of (cones ofthis type so as to make it possible for an OPGi'fiilOFWltii one hand tomove the crane along the rumvaycnd to move the trolley along the crimeand to coniziol the hoist without making i'c necessary for him to shifthis hand from one point to another, and leaving his other hand free forother 'WQKk.

In carrying out my invention it rigid pipe is extended downward fromlive trolley for enough '50 that if. can he. conveniently reached by theoperator while standing on the floor, this pipe being; connected to lhotrolley in a manner such limit the opcinlo can, by pushing or pulling onit cilhcimove the trolley sil'ong zinc crane, or the crane along itsi'unwnyq The trolley is provided with on electric hoist which isx'ei'noi'c. controlled, and for the control of the hoist switching moonspreferably in the form of a pair of push button switchos orc p fevidciinear the bottom of the pipe which forms :1v conduit for the switchwiring, so limb the operator can with his liimnh operate either of thelioisi; controlling swilchcs while his hand grips the pipe to shift the(111110 ortrollcy, or both.

The invention mcy he further briefly summarized as consisting in certainnovel (letaiis of construction, :mii coml'iinetions'mid arrangements fports which will he (lesci'ibeil in the specification and set, forth inthe appended claims.

In the accompanying sheets of cirawings wherein I have shown thepi'c'icl'recl GlflliOl'liment of the invention, Fig. 1 is a perspectiveView showing a portion of a crane and one 01" the runway rails for thecrane, said crane being equipped with my iin'e nfiio'n; Fig. 2 is iiside View of, the ti'oilcrynmd of a portion of the body of the crane?-Filz. 3 is an enlarged View of the lower end of the crane controllingmcmher showing the push .and the remote conlrolled and push buttonswitches.

The crane herein iilustmted is in itself of the well-lmown hype hich hoea "body or cross-portion 1D in the'zform of an I-lzcem to the emis ofwhich are connected end trucks 11 hevinwheels 12 'whicli travel alongthe pamlle mile 13 cities crane run way. I have herein illustratedeim ione of the rails 13 one one of the whee e end trucks 1'1, but it will beundershoofi that the construclion at leech ends is the same except thatthe truck cc one end of the crime has ihPfilil of cuercn'l'. collectors.

Travelling over iiie lower ficngeof the ii-beam 10 is a trolley 14 whichis pmvideci with an electric hoist. The details of the hoislv meimmelc'rial to my invention, but I have indicateil the motor at 15, thecable drum at 16 on which the-hoist; or load cable 1? is adaplecl to bewouncl and from which it is designed to be unwound to raise and lowerthe loacl respectively.

The motor receives currentfrom a peinof trolley wires 18 whic'hcreengaged by trolicy Wheels 19 carried by the trolley, these trolley wires18 extending across the crane above and parallel to'lihe I-hemn 10.'lhey receive current from a; pair of main trolley wires 20 which areabove one oi the runway i rails 13 and are ei'igaged by trolleys 3,1 cm.rie/d by one of the end trucks 11 of the crane.

A crane of this typcis pulled or pushed hy hand along the runway, andthe trolley is in [is similar manner moved along the crane. Inaccordance with my invention the moons for moving the crane or ifihetroi icy, or botn encl the means for controlling: the hoist is. embodiedmore or loss in one element, Moi with this in view Icx'l'omi down fromthe-trolley a. pipe 22 which has sufficient lenglh that the lower partcan he conveniently reached by the ope-mics: on The floor below. Theupper 1 art of thepipe is in any suitable way rigid y connected to thetrolley so that it extends down as o rigid arm or handle which illenable the cyclic lo he pushed along the crane and the to be pushed:ilon; its runway.

' However Ilind that: this overcome v can be mo There are various Waysin which the upper end ofthis'v pipe can be rigidly connected to thetrolley for the purpose described, but in this instance its upper end isattached to an exten sion 23 of a'load bar 2; of the trolley, and" ashortdistance beneath the loud bar this pipe is connected to the trolleyby a bracing member 23'. In this manner .sutiicient I'JQI- idity isprovided between the trolley and pipe for thewpurpose o Entering thetrolley und thecrane. l-l'eretolore it; lias been necessu rylin :L craneot this type to posit-ion the loa'dfor trolley at the centcinot'thecrime before the, crane couldehe moved alone the riinwaysincebvpushing against; theload with the trolley near one end, that particleiar end would more but the other end would remainstationary, r nsing t1bindingactio-n; objectioncnn be oilectivelv, i. e that the crane ,dalongthe runway by pushing or pulling on thepipe even though the-trol= ley'near one: endh flexibly suspendingthe runtvti'y endbyprovidi-ng; on theend trucks supporting. 'ivheels which swivel so that the tlangcs ot'the{vheels are prevented from diggingint -the ruilsnndthus caus ing abinding action. i

In accordance :Witlrniy invention the hoist motorisremote-controlledthrough the medium of solenoid operated switches; thedc" tails of which are immaterial to-iny inven tion and which arepreferably,enclosed in a box 24 attached to one side of the-hoist." In

Fig. ll have shown conventionally or diagrz'immatically oneiway in whichthis can be accomplished. In this figure l'utiliZe tour remotecontrollea'l switches 25, 26, 27 and 28 which are closed by solenoids 29adapted to be connected to the current supplying or line conductors 30by switching meansconsisting preferably of push button switches 31"which in 'ZLCCOl'CltIIlCGWltll my invention are arranged in 0. housing32 near the lower end of the pipe 22 as shown in Figs. 1 and 3. TheWires, in this instance three in number, are extended up from the pushbutton switches 31 through the pipe to a. point near the. upper endotthe lzttter where' they are extended imvai-dly to the box2 l" containingthe remote controlled switches.

Each oi these push bhtton, switches con trols two ot the switches; onecontrollirig the switches and, 271. and the other the switches 26- andWhen one of the Push button switches closed sons to close'tivo oftheremote controlled switches, current passes from the line conductorsthrough the armature 1.'iand field with ,the current passing throughthe'armatiruein one direction, and when the switches ofthe other set areclosed by manipulating the other push button switch, the current againpasses through the field and armature of the motor butthrough.thearmature in the reverse directionl ,ln;otlierlwords, ovhenonepush buttonsrvfitch is operated, the hoist cable is Wound insoas to1'tLlSQ,l1QlQfltlOl lOflti hook; and ivhenfth'e other. push buttons-i'vitch is closed. the" cable is unwoiind so as to-losver the .lo ador the load hook.

"In practice, an interlockis provided bet\V QOI1,.tl1E3 lTWO sets ofremote controlled switches so that it is impossible to close all theswitches at the same time, but as before stated, the dctails'of theswitches are inii'na aterial ,to the invention; and the 'sain is hence II i lnmov'ing the trolleywoi the crane ltSt-ilfliii theoperator puts hishandon thelow'er endof the pipe 22, and when he wishes to raise true ofthe-interlock re terred to, and it is not-shown.

or lowerfltheiload he can do this by closin either push buttonswitch-With 'hislt'l'litni' and ithouttakinghis'hand tio1n tli'e"piiie.'He can thus move the crane or "trolley'tmd takecare ofthehoist with onelmndwvithout'i' f movingit froln' one point. to' a nk'ither, and

leaving the-other hand free; In 'fachflwith this one hand the severaloperations of'nifov-f ing th'e trolley and the crane,or bothf, and

of eontrollingthe hoist'can be 'pe'rforinedf either simultaneously o1-successively. I While I haveshownftlie preferred form of my invention, Ido not desire to be c' onj-t fined to the exactdetuils sliownibufiaim inmy claims tocov'c'r all modifications which do not involve a departurefrom the "spirit. and scopeof niy invention as definetlin the iippendedclaims. l v

.l'laving described my invention, I'claint: :1. In com'binat'ion 'Withncrime adapted to be n'ioved' along a. ru'ntvay, aftirdlley adapted totieoved along the cra'iie, -an electric hoist in said trolley iin dl arigid member"extending down vtro'm' the trolleyi and carrying hoistcontrolling switches.

2 In combinationwitha {crane adapted to be moved along 511 runwtzy,strolley adapted.

lie

to he movedalongjthe crime and provided with an electric hoist, and ahollow cra'ne and trolleymoving member extending down from the tr'olleyand proilidd n it e lowei-"end witli'hoist controlling. switches, .vstud hollow niember'formingaconduitfo1n the wires 'entehding li oni theswitches 3. In combination with a (irane da pted v V I runway, a trolleysd:1pted to' be moved along'itho, crane and,

to be moved along provided vitli an; electric hoist remote con-R trolledsivitc hes lor: operating the hoist, and a rigid member .xtehdingfdoxhfrointhe trolley and: 'providedpneanitsdowen end 1 with hoist controlledswitches. connected to said remotecontrolledswitches.; 2-1

4. In combination with a crane adapted to v be moved along azrunwayyatrolley adapted to be moved along the crane and provided with anelectric holst'having remote conmenace trolled switches, a rigid pipeconnected to the trolley and extending downward there from, and a; pairof hoist controlling switches near the lower end of said pipe, said pipeconstituting a conduit for wiring connecting the last mentioned switchesto the remote controlled switches.

5. Incombination with a crane runway a crane movable by hand along therunway a trolley adapted to be moved by hand along the crane and havinga motor operatcd'hoist and a rigid member rQ ectmg down from the trolleyand serving when force is applied thereto to move the trolley along thecrane or to move the crane along its runway or both, said member embodymg means for controlling the hoist motor.

t. In combination with axload carrier adapted to be moved along anoverhead track, a hoist on said carrier by which the load may be raisedor lowered, a handle depending from the carrier by which said carriermay be pushed along the track, and means for operating the hoist, saidhoist operating means including a controlling;

element, connected with the handle.

7. The combination with a load carrier adapted to be moved along anoverhead traclcway and having; a hoist' by which the load may be raisedor lowered, of a member depending from the carrier, said member having aconnection with the carrier such that the carrier may be moved along thetrachway when force is applied to said member, said member also havingmeans by which the operation of the hoist may be controlled to raise orlower the load.

In testimony whereof, I hereunto affix my signature.

EARL T; BENN] NGTON.

